The utility model discloses a push plate ejection and holding mechanism for a movable mandrel of an injection blow molding machine, comprising a triangular frame-shaped turret movable up and down on a turret base, a through mounting groove is formed on each side of the turret, an ejection mounting seat is arranged at each side in the turret, a plurality of mandrel assemblies are arranged on each side of the outer periphery of the turret, a sliding sleeve is embedded in the mounting groove of the turret, a piston is embedded in the sliding sleeve, an ejection rod is arranged on the ejection mounting seat, the end of the ejection rod pushes against the piston, the piston is connected with a push plate, the push plate is connected with the movable mandrel of the mandrel assembly, a rotating shaft is arranged on the ejection rod, an inclined slot matched with the rotating shaft is arranged on the turret base, when the turret descends, the inclined slot pushes the rotating shaft to drive the piston and the movable mandrel to extend out, a limit slot is arranged on the outer periphery of the ejection rod in the ejection mounting seat, a positioning ring matched with the limit slot is sleeved on the ejection rod, and a return spring matched with the side wall of the ejection mounting seat to drive the ejection rod to retract is arranged on the outer periphery of the positioning ring.

Country Code: CN

Application Number: CN202022498671.9